Bright-colored bright-red inclusion pigment for ceramic ink-jet printing and preparation method of bright-colored bright-red inclusion pigment

Abstract

The invention relates to the field of inorganic pigments, in particular to a preparation method of a superfine zirconium silicate-coated cadmium selenide bright red pigment capable of meeting ceramic ink-jet printing requirements. When the method is used for preparing the inclusion pigment, the inclusion rate can be increased to 15-25% from original 8-10%. The obtained inclusion pigment is small in particle size and narrow in particle size distribution (wherein an average particle size is 0.6-0.7 micron, and main particle size distribution is in a range of 0.5-1.0 micron), the particle size of the inclusion pigment is greatly reduced compared with the particle size of an existing inclusion pigment, and the inclusion pigment can present the same bright bright red color; and when a CIEL * a * b * system is adopted for representing pigment performance, the lightness value (L *), the redness value (a *) and the yellowness value (b *) of the inclusion pigment are 54-57, 50-53 and 19-23 respectively. According to the invention, the inclusion rate is greatly improved, the amount of post-treatment waste liquid is greatly reduced, production efficiency is greatly improved, and production cost is greatly reduced.

Description

【Technical field】 [0001] The invention relates to the field of inorganic pigments, in particular to a bright red zirconium silicate-wrapped cadmium sulfoselenide pigment suitable for inkjet printing of ceramics. 【Background technique】 [0002] Zirconium silicate (ZrSiO 4 ) wrapped cadmium sulfide selenide (Cd(S x Se 1-x )) The bright red material is characterized by its unique high temperature stability and the unique brilliance of the cadmium sulfur selenide pigment, and the heavy metal element Cd is replaced by ZrSiO 4 It is wrapped and hard to dissolve, and has minimal toxicity. It has long been the main red pigment used in the ceramic industry, and has been widely used in the glaze decoration of ceramic products. In current industrial production, zirconium silicate-coated cadmium sulfoselenide pigments are generally prepared by liquid-phase co-precipitation. The typical preparation process is: firstly use water-soluble zirconium salt and soluble cadmium salt to make m...

AI Technical Summary

Problems solved by technology

Though this method is strong in operability, there is following important deficiency: (1) the actual wrapping rate of cadmium sulfoselenide is only 8~10%, in order to obtain stable zirconium silicate wrapping cadmium sulfoselenide pigment product, need to After high-temperature calcination, the product undergoes subsequent treatment (soaking in strong acid, cleaning, drying, etc.) to remove most of the cadmium sulfur selenide that has not been effectively wrapped, resulting in a large amount of waste liquid, resulting in high production environmental protection pressure and increased follow-up waste. Liquid treatment cost, low production efficiency and high cost of wrapped color material; (2) The prepared packaged color material has a large particle size (mostly 5-30 microns), wide particle size distribution, and irregular shape. The material can only be applied to ceramic decoration technologies such as traditional rubber roller printing and screen printing, and cannot meet the requirements of new ceramic inkjet printing technology

Since the zirconium silicate-wrapped cadmium sulfoselenide bright red material prepared by the prior art cannot meet the ink preparation requirements, it has long lacked bright bright red ceramic ink, which greatly affects the decorative effect of ceramic inkjet printing.